Rolling-mill



(No Model.)

' J. H. BIGKLEY.

ROLLING MILL.

No. 289,605. Patnted De ob l, 1883.

Phnlo-Lilhognphor, Washington. B4 c UN TED STATES PATENT OFFI E.

JOHN H. BIOKLEY,-OF DOVER, NEW JERSEY.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 289,605, dated-December4, 1883, Application filed January 23, 1883. (No model.)

To all whom it may concern.-

Be it known that I, JOHN H. BIOKLEY, a citizen of the United States,residing in Dover, Morris county, New Jersey, have invented certain newand useful Improvements in Rolling-Mills, fully described andrepresented in the following specification and the accompanyingdrawings, forming a part of the same.

This invention relates to an improved construction for a three-roll milladapted to shape the bar in a cavity between all the rolls; and thenature of my improvements will be understood by reference to thefollowing description and to the annexed drawings. 7

Figure 1 is an end elevation of a mill provided with my improvements.Fig. 2 is aside elevation of the same. Fig. 3 is a plan of the steamcylinders and their connections and valve-gearing. Fig. 4 is ahorizontal central section of one of the valves. Fig. 5 is a verticalcentral section of the same. Fig. 6 is a detached view of the gears fordriving the rolls, and Fig. 7 is an axle of profile or outlinecorresponding with the rolls shown in the mill.

A A are the housings of the mill; B B, the bottom rolls, and B the toproll, mounted in a vertical slot, d, in the housings, above the spacebetween the lower-roll bearings b b. The housings are shown fitted torailsRupon a bed-plate beneath the mill, and clamped thereto by bolts S.The caps O at the tops of the housings are shown provided with verticalsteam-cylinders D, the pistons of which are formed with rods E,projected through stuffing-boxes b downward into the slots (1, andsecured to the boxes 0, which support and move the upper roll, B Theseboxes 0 are shown made in halves, with bolts to take up the wear; butthe lower rolls, B B, are set in open boxes or bearings b b, the latterof which is movable and arranged to slide outward for discharging thefinished work. The lower rolls are mounted at the same level in thehousings A, and the upper roll being set centrally over them, the wholethree surround a cavity in which a shaft can be laid parallel with therolls, and in which it can be subjected to a rolling pressure upon itsentire length at once.

The rolls are shown in the drawings adaptcylinder.

ed to shape a railway-car axle of the form shown in Fig. 7, and theshaft shown at s in Fig. 1 represents such axleduring the rollingoperation; but by changing the profile of the rollsit is obvious thatany other kind of shaft can be shaped in a similar manner. In practicesuch a mill would be operated in conjunction with the ordinarybar-rolls, which would roll the bar to a suitable size by rolling itlengthwise in the usual way. From such an ordinary mill the bars wouldbe: passed in a line parallel with the rolls B B tothe mill shown in mydrawings, where pieces of suitable length would be introduced betweenthe" three rolls by raising the upper one a sufficient distance, thelower ones being set close enough together to retain the bar in thecavity between them, as in Fig. 1. The upper roll would then be loweredand pressed upon the bar while all the rolls revolved until the bar wasfully shaped. By moving the roll B horizontally at the close of therolling operation, the finished axle could be dropped upon a truck andcarried away from the mill. The steam-cylinders shown at the tops of thehousings afford the means of raising, lowering, and

pressing down the top roll, B with great fa= are connected by cranks fand a tie-bar, 9, so

as to be moved simultaneously by the handle it on the said bar. Theportsin the valves are seen in the sections in Figs. 4 and 5, where'anarrow, i, shows the entrance of the steam through the valveinto one ofthe cylinderpassages m through a port, n, in thevalve, the exhaustffrom'the opposite end'of the cylinder passingout through the passage 111/,

through the port a in the valve to the discharge at T, as at arrow at1". By turning the valve one-fourthof a revolution in its seat,

Ioo

5 -ure.

the action of the portswould be reversed and the steam and exhaust passthrough the passages m m in opposite directions. With such aconstruction it will be seen that the upper roll may be moved in eitherdirection or pressed upon the bar 8 with the full force of the steamabove the pistons 19.

To draw back the roll B when the bar is fully shaped, I provide a cam,j, behind each of its boxes b, and connect the cam with the box by astrap, 0. The cams are sunk in slots 70 in the housings, and areconnected to gether by a shaft, Z, having a hand-lever, Z, securedthereon, for turning the cams at pleas- When the boxes I) are pushed in,as shown in Fig. 1,- for rolling a bar, 8, the cams are in a neutralposition, and no pressure is transmitted to the shaft Z to cause it toturn, thus locking the boxes securely in the required position. a

In Fig. 2 is shown the end of the drivingspindle E, which is mounted inany suitable manner opposite the center of the bar 8, and provided witha gear, F, to rotate all the three rolls at the same time.

In Fig. 6 is shown such arrangement, and the three gears G, secured uponthe ends of the rolls B, B, and B to receive the motion of the gear F,set centrally between them.

The gears G are omitted from Figs. 1 and 2 to avoid obscuring thedrawings; but in the latter view both ends of the rolls are shown 0 but,having set forth the nature of my improvements, it will be seen that theuse of the steam-cylinders having their valves connected by the tie-barg enables me to control the movement of the upper roll with greatfacility, so that the bar 8 may be introduced with the least possibletrouble from the side of the rolls. The use of the cams to open thelower rolls also enables me to discharge the finished barinstantaneously and to restore the rolls to their working positionwithout the delay occasioned by the use of screws, such as are commonlyused to adjust the rolls sidewise. The arrangement of the driving-gear Fin the center of the three rolls also avoids the transmission of thepower through'one roll (or its gear) to another.

I therefore claim my improvements as follows:

1. The combination, with the rolls B, B, and B arranged and operated asdescribed, of the steam-cylinders D, provided with rotary valves V,having a connection or tie bar, 9, for moving them simultaneously, andthe piston-rods E, secured to the boxes of the upper-roll boxes 0, thewhole operated substantially as shown and described.

2. In a three-roll mill having the rolls arranged and operated asdescribed, the combination, with one of the lower rolls, of slidingboxes, as Z), cams to move them to and fro, as described, and aconnecting shaft, Z, and hand-lever Z, for operating the camssimultaneously, as and for the purpose set forth.

. In testimony whereof I have hereunto set my hand in the presence oftwo subscribing witnesses.

JOHN II. BIOKLEY.

WVitnesses:

THOS. S. CRANE, IV. F. D. CRANE.

